The power of Gnome Shell lies in its extensionability. It is this power that transforms the barely unusable vanilla Gnome Shell desktop environement into a powerful and extremely usable and productive desktop environment. Gnome shell has a number of useful installations to enhance the user experience. To learn how to install and enable them using the Gnome Tweak tool check out our post on Installing and using Gnome Shell. In this post we will look at some must have Gnome shell extensions.